GLP-1 hair loss is real, but your shampoo probably isn't fixing it

What did @branneisha actually say?

She shared a shopping haul from Ulta's wellness section framed around managing hair loss she attributes to GLP-1 medications. Her protocol includes hair, skin, and nail vitamins with collagen, the Cécred hair care line, Shea Moisture Rosemary Oil, and scalp oil. She also said "nutrition plays a huge part in it" and told viewers to prioritize protein and stay consistent with vitamins. She used protective styles like braids and sew-ins to reduce manipulation while her hair recovered. She did not claim these products cure anything. She said her approach is "working like a dream."

This is a personal experience video, not a medical recommendation. That framing matters. She is not a clinician, and she never claims to be. The question is whether the things she recommends have any scientific backing, and where the gaps are.

Does the science back this up?

Partially, yes. The rosemary oil recommendation has the most evidence behind it. Protein prioritization is genuinely sound. The vitamins claim is weaker and depends heavily on whether a deficiency exists.

On rosemary oil: a 2023 randomized controlled trial by Guo et al. in JAMA Dermatology found rosemary oil comparable to 2% minoxidil for androgenetic alopecia at 6 months. That is a real finding, though it is worth noting GLP-1-related hair loss is typically telogen effluvium, a different mechanism. A 2019 study by Almohanna et al. in Dermatology and Therapy confirmed that protein and micronutrient deficiencies worsen telogen effluvium. Rapid weight loss, which GLP-1 medications can produce, is a well-documented trigger for this type of shedding. Protein intake directly supports the anagen phase of hair growth, so her advice to prioritize protein is clinically grounded. Blanket collagen supplement recommendations are less supported. Most studies on oral collagen and hair are small, industry-funded, or both.

What did they get wrong (or right)?

She got the big things right and the small things fuzzy. Telling viewers to prioritize protein is one of the most evidence-aligned things someone can say about GLP-1 hair loss. Protective styling to reduce mechanical damage is standard dermatology advice for telogen effluvium.

Where she goes fuzzy: recommending everyone grab the collagen vitamin product without any context around whether the viewer is actually deficient in anything. Hair, skin, and nail supplements are heavily marketed but the evidence is thin unless you have a documented deficiency in biotin, zinc, iron, or vitamin D. A 2017 review by Almohanna et al. in Dermatology and Therapy found that routine supplementation in non-deficient individuals does not reliably improve hair outcomes. She also says "everybody get this one" about the collagen vitamin, which is too broad. That kind of blanket recommendation is where personal experience content creates real risk. Not everyone shedding hair on a GLP-1 needs the same intervention, and some causes of hair loss require a dermatologist, not a trip to Ulta.

What should you actually know?

GLP-1-related hair loss is almost always telogen effluvium driven by rapid caloric restriction and weight loss, not a direct drug effect. That distinction matters for treatment. The first step is not a product haul. It is bloodwork.

Before buying anything, ask your prescriber to check ferritin, zinc, vitamin D, and thyroid function. Ferritin below 30 ng/mL is a common and correctable cause of shedding that gets missed. A 2023 paper by Starace et al. in Journal of the European Academy of Dermatology and Venereology specifically flagged nutritional deficiencies from GLP-1-driven weight loss as an underrecognized contributor to hair shedding in this population. Rosemary oil as a topical is low-risk and has reasonable evidence. Protective styling is smart. Protein targets of 1.2 to 1.6 grams per kilogram of body weight are consistent with what most obesity medicine specialists recommend on GLP-1 therapy. But no topical product will compensate for a 600-calorie-a-day deficit. If your intake is too low, fix that first.

Bottom line

This video is well-meaning and not dangerous. The creator is sharing what worked for her, and some of it is genuinely reasonable. But viewers should not interpret a shopping haul as a protocol. Hair loss on GLP-1s deserves a real clinical workup before you spend money on supplements, because the fix might be free.